Boiler casing



l. HARTER I Sept. 27, 193.2.

BOILER CASING Filed oet. 14l 192s f A TTU/@NE YS Patented Sept. (27,1932 UiSuTi-:n sTATEs PATENT OFFICE IsAAc HARTER, or noNGAN HILLS, NawYORK, AssIeNoR To THE 'nABcoox a wILcox conrANY, or BAYONNE, New JERSEY,A CORPORATION or Nnw .rnassusnrv BoILRR cAs'ING T his invention relatesto a casing for a boiler, and will be understood from the descriptionand the accompanying drawing, 1n which Fig. 1 is avertical"sectionthrough a boiler in connection with which an embodimentof the invention is illustrated; Figs. 2

and 3 are similar sections on an enlarged scale, partly broken away;Fig. 4 is a section along the line 4 4 of Fig. 3 and Fig. 5 is a similarsectionofamodiiication.

In the drawing, reference characters and 11 indicate upper and lowerhorizontally-dis, posed drums that are connected by banks of tubes 1,2.`Alpipe 13 extends from the drum 10 to the superheater 14 that `islocated between the tubes v12. v

Supports 15 are provided beneath the sides of the-boiler casing. Theboiler casingmay be made of tile,fvor example. -The boiler casin rests`upon the supports 15, and is provied with a top 16 and a bottom 17,with soot pockets 18'locatedfin the bottom.

Longitudinally-disposed metal plates 20 are provided for the outside ofthe side walls Channel-shaped tile that may be made of metal orrefractory material, make up thel inside lining of the side walls of thecasing.

Ihese tile have longitudinal projections thereon, such as ribs orflanges 2.6, that may contact with the outer portion of the boiler, hereconsisting of the outside row of tubes12', as most clearly shown in VFig. 4. Horizontallydisposed metal channel members 28 are located atintervals along the inside wall of the casing, and the flanges thereofcontactwith the corresponding flanges on the tile above and below thesame. Scot blowers 29- may be b located in the channel members 28. Thespace between the side walls, made up of metal plates 20 on one side,and the tile 25 and channels 28 on the other side, is filled withinsulating material 30. l

k'Application led October 14, 192B. Serial No. 141,661.

L-shaped bars 31 are riveted to the lowest of the metal plates 20 (Fig.2), and are anchored to the walls 15 by means of anchor bolts-32, .whichare bolted to the L-shaped bars 31, and are seated in suitably shapedgrooves provided in the topmost tile of the 'walls 15. Longitudinalbattles 32 are provided between the side walls of the casing and thedrum 10 to prevent the hot gases from rising beyond the upper'ends ofthe tubes 12.

rows of tubes 12 are shown staggered and the tubes in the outside rowextend yinto recesses 33 in the flanges or ribs 26 of the tile 25. Inboth illustrations of the invention, hot gases can pass between theoutside rows of tubes 12 and the inside walls of the boiler casing,andare guided along horizontal paths by In the modification shown inFig. 5, the qu' means of the flanges 26 of the tile. In this Way, theoutside rows of tubes next to the walls will have free circulation ofhot gases on all sides thereof to cause greater heat absorption byAthese tubes than would be the case if ordinary'iiat tile were laid aainst the tubes 12. At the same time, the-tul es 12 prevent the tile 25of the furnace w'all from falling inwardly.

Although the invention has been described .in connection with a boilerin. which an upper and lower horizontally-disposed drum is connected byvertically-disposed tubes with superheater tubes interposed, in whichhot gases are to be lpassed horizontally among the i tubes, it is to beunderstood that the inven tion may be used with otherv types of boilers.

I claim l 1. In combination, a boiler casing wall having an inner liningformed of horizontally 'disposed channel members with inwardl extendingflanges, and a boiler having vertlcally disposed tubes and having itsouter tubes contactingonly in spots with the ianges of said memberswhereby said channels are held agalinst linward lateral movement by`said o1 er.

2. In combination, a boiler casing wall havi ing its outer surfaceformed of a pluralit of plates secured togetherat adjacent e ges,stifiening members secured between adjacent plates, a boiler havingvertically disposed tubes within said casing, an inner lining for saidcasin formed of a plurality of ltile in the l p shape of c annelshorizontally disposed with inwardly disposed flanges, said lflanges conytacting in spots with the outer portion of said tubes and the portionsbetween flanges being spaced from the boiler, and a layer of insulatingmaterial disposed between said plates and said tile.

3. A boiler casing wall havin face formed of aplurality of platesprovided with flanges at their adjacent edges, stiifening membersdisposed between said anges and secured thereto, an inner lining ofmetallic material an insulating material disposed between said platesand lining, a boiler having vertically disposed tubes-within said casing4and inwardly extending horizontally disposed projections on said liningcontacting with tubes of said boiler within the casing with the portionsof the lining between proj ections spaced from the boiler, whereby gasesmay. circulate between said projections and contact with the outerportion of the boiler.

4. In a water tube boiler having vertically disposed tubes, ahorizontally channeled casin for said boiler having the channels on thesi e toward said tubes and in proximity to l some of said tubes.

5. AIn a water tube boiler having vertically disposed tubes, ahorizontally channeled casin for said boiler having the channels on thesi e toward said tubes, the edges of the flanges of said channelscontacting of said tubes;

` Isulacy HARTER;

with some its outer sur-

